Old English hæt hat, head covering variously glossing Latin pileus, galerus, mitra, tiara, from Proto-Germanic hattuz hood, cowl source also of Frisian hat, Old Norse hattr, höttr a hood or cowl

A hat is a head covering which is worn for various reasons, including protection against weather conditions, ceremonial reasons such as university graduation, religious reasons, safety, or as a fashion accessory:

  • any receptacle from which numbers or names are pulled out in a lottery
  • typography the háček symbol
  • programming the caret symbol ^
  • internet slang refers to an ethical computer hacker, or a computer security expert, who specializes in penetration testing – white hat
  • a particular capacity that a person might fill

wikipedia, encyclopedia britannica

Veronica Toppino’s social distancing hat – www.dezeen.com